Added lower to tag_categories search

ext/tag_categories/main.php

@@ -75,14 +75,14 @@ class TagCategories extends Extension
             $types = $database->get_col('SELECT category FROM image_tag_categories');
             if (in_array($type, $types)) {
                 $event->add_querylet(
-                    new Querylet("EXISTS (
+                    new Querylet($database->scoreql_to_sql("EXISTS (
 					    SELECT 1
 					    FROM image_tags it
 					    LEFT JOIN tags t ON it.tag_id = t.id
 					    WHERE images.id = it.image_id
 					    GROUP BY image_id
-					    HAVING SUM(CASE WHEN t.tag LIKE '$type:%' THEN 1 ELSE 0 END) $cmp $count
-					)")
+					    HAVING SUM(CASE WHEN SCORE_STRNORM(t.tag) LIKE SCORE_STRNORM('$type:%') THEN 1 ELSE 0 END) $cmp $count
+					)"))
                 );
             }
         }